A thermal treatment medical system including an umbilical having a first portion and a second portion, and a connector including a male coupling body connected to the first portion, the male coupling body having a central shank defining first and second lumens, a female coupling body connected to the second portion, the female coupling body, matable with the male coupling body and defining third and fourth lumens matable to be in fluid communication with the first and second lumens, respectively, to define first and second fluid flow pathways, respectively, through the connector when the male coupling body is mated with the female coupling body. The second fluid flow pathway is co-axially disposed about a central axis coincident with the first fluid flow pathway. The connector includes a mating mechanism for spatially locking the male and female coupling bodies with respect to each other. Additionally, the thermal treatment medical system includes a multiple lumen co-axial connector for connecting the catheter flow pathways with a fluid source and control console.
